mac802154: move local started handling

This patch removes the current handling of started boolean. This is
actually dead code, because mac802154_netdev_register can't never be
called before ieee802154_register_hw. This means that local->started is
always be true when mac802154_netdev_register is called. Instead we
using this now like mac80211 to indicate that an instance of sdata is
running.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

3 files changed, 4 insertions, 26 deletions

diff --git a/net/mac802154/driver-ops.h b/net/mac802154/driver-ops.h
index bf7980bbceff..bb3ee03c1669 100644
--- a/net/mac802154/driver-ops.h
+++ b/net/mac802154/driver-ops.h
@@ -29,6 +29,8 @@ static inline int drv_start(struct ieee802154_local *local)
 {
         might_sleep();
 
+        local->started = true;
+
         return local->ops->start(&local->hw);
 }
 
@@ -37,6 +39,8 @@ static inline void drv_stop(struct ieee802154_local *local)
         might_sleep();
 
         local->ops->stop(&local->hw);
+
+        local->started = false;
 }
 
 static inline int drv_set_channel(struct ieee802154_local *local,
diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
index f52afd4ced92..bf0b5f613c36 100644
--- a/net/mac802154/ieee802154_i.h
+++ b/net/mac802154/ieee802154_i.h
@@ -50,19 +50,12 @@ struct ieee802154_local {
          */
         struct workqueue_struct *workqueue;
 
-        /* SoftMAC device is registered and running. One can add subinterfaces.
-         * This flag should be modified under slaves_mtx and RTNL, so you can
-         * read them using any of protection methods.
-         */
         bool started;
 
         struct tasklet_struct tasklet;
         struct sk_buff_head skb_queue;
 };
 
-#define MAC802154_DEVICE_STOPPED        0x00
-#define MAC802154_DEVICE_RUN            0x01
-
 enum {
         IEEE802154_RX_MSG        = 1,
 };
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
index 7458f71c151c..21dcc56930d1 100644
--- a/net/mac802154/main.c
+++ b/net/mac802154/main.c
@@ -46,13 +46,6 @@ mac802154_netdev_register(struct wpan_phy *phy, struct net_device *dev)
 
         SET_NETDEV_DEV(dev, &local->phy->dev);
 
-        mutex_lock(&local->iflist_mtx);
-        if (!local->started) {
-                mutex_unlock(&local->iflist_mtx);
-                return -ENODEV;
-        }
-        mutex_unlock(&local->iflist_mtx);
-
         err = register_netdev(dev);
         if (err < 0)
                 return err;
@@ -235,14 +228,6 @@ int ieee802154_register_hw(struct ieee802154_hw *hw)
         if (rc < 0)
                 goto out_wq;
 
-        rtnl_lock();
-
-        mutex_lock(&local->iflist_mtx);
-        local->started = MAC802154_DEVICE_RUN;
-        mutex_unlock(&local->iflist_mtx);
-
-        rtnl_unlock();
-
         return 0;
 
 out_wq:
@@ -263,10 +248,6 @@ void ieee802154_unregister_hw(struct ieee802154_hw *hw)
 
         rtnl_lock();
 
-        mutex_lock(&local->iflist_mtx);
-        local->started = MAC802154_DEVICE_STOPPED;
-        mutex_unlock(&local->iflist_mtx);
-
         list_for_each_entry_safe(sdata, next, &local->interfaces, list) {
                 mutex_lock(&sdata->local->iflist_mtx);
                 list_del(&sdata->list);